Deaths from lightning, statistics of 170–175
De la Rive (Professor) on the origin of atmospheric electricity 71
Dumdum, India, destruction of a magazine by lightning at 92
Earth connection, the French methods of arranging the 131 ———— general description of 198–217 ———— Benjamin Franklin on 199 ———— Rev. Dr. Hemmer on 200 ———— Professor Landriani on 201
Electrical machines, Otto von Guericke’s 2 ———— Sir Isaac Newton’s 2
Electricity, the early history of 1 ———— the discovery of the instantaneity of its movement 8 ———— positive and negative, Benjamin Franklin on 26
‘Electron’ or amber, and its properties 1
Electro-magnetism, Hans Oersted’s researches in 57
England and Wales, deaths from lightning in 170
Fatalities and accidents from lightning 169–197
Folkes (Martin), experiments in electricity 7
France, the ‘Instruction’ of the Paris Academy on lightning-conductors 75 ———— the general adoption of lightning-conductors in 77 ———— the protection of powder-magazines in, from lightning 82 ———— lightning protection in 125 ———— neglect of lightning-conductors in 125 ———— account of the details of the French system 126 ———— the ‘area of protection’ theory in 126 ———— the ‘ridge-circuit’ as used in 129 ———— deaths from lightning in 171
Franklin (Benjamin), his early life 10, 11 ———— his first experiments in electricity 12–19 ———— correspondence thereon with Peter Collinson 12, 13, 17 ———— on the identity of lightning and electricity 16 ———— ‘New Experiments and Observations in Electricity’ 18 ———— his ‘kite’ experiment 22 ———— honours conferred on him 24 ———— his first lightning-conductor 25 ———— his experiments therewith 25 ———— on positive and negative electricity 26 ———— his lightning-conductor on West’s house 30 ———— his letter to Professor Winthrop defending lightning-conductors 36 ———— his troubles in making his first lightning-conductor 101 ———— on the earth connection of lightning-conductors 199
French technical terms for lightning-conductors 102
Fuller (Thomas) on fires caused by lightning 176
Galvani’s experiments on animal electricity 70
Galvanometer, the invention of the 58 ———— a new form of 60
Geneva, the progress of lightning-conductors in 43
Genoa, St. Mary’s Church struck by lightning 201 ———— Professor Landriani thereon 202
